1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <sal/types.h>
#include <rtl/ref.hxx>
#include <osl/mutex.hxx>
#include <store/types.h>
#include "object.hxx"
#include "storbase.hxx"
namespace store
{
class ILockBytes;
class PageCache;
struct SuperBlockPage;
class OStorePageBIOS : public store::OStoreObject
{
public:
/** Construction.
*/
OStorePageBIOS();
/** Conversion into Mutex&
*/
inline operator osl::Mutex& (void) const;
/** Initialization.
* @param pLockBytes [in]
* @param eAccessMode [in]
* @param rnPageSize [inout]
* @return store_E_None upon success
*/
virtual storeError initialize (
ILockBytes * pLockBytes,
storeAccessMode eAccessMode,
sal_uInt16 & rnPageSize);
rtl::Reference< PageData::Allocator > & allocator()
{
return m_xAllocator;
}
/** read.
*/
storeError read (
sal_uInt32 nAddr, void *pData, sal_uInt32 nSize) const;
/** write.
*/
storeError write (
sal_uInt32 nAddr, const void *pData, sal_uInt32 nSize) const;
/** isWriteable.
*/
inline bool isWriteable() const;
/** isValid.
*/
inline bool isValid() const;
/** Page Access.
*/
storeError acquirePage (
const OStorePageDescriptor& rDescr, storeAccessMode eMode);
storeError releasePage (const OStorePageDescriptor& rDescr);
storeError allocate (OStorePageObject& rPage);
storeError free (sal_uInt32 nAddr);
/** Page I/O.
*/
storeError loadObjectAt (
OStorePageObject& rPage, sal_uInt32 nAddr);
storeError saveObjectAt (
OStorePageObject& rPage, sal_uInt32 nAddr);
/** close.
* @return store_E_None upon success.
*/
storeError close();
/** flush.
* @return store_E_None upon success.
*/
storeError flush();
protected:
/** Destruction (OReference).
*/
virtual ~OStorePageBIOS() override;
private:
/** Representation.
*/
rtl::Reference<ILockBytes> m_xLockBytes;
osl::Mutex m_aMutex;
std::unique_ptr<SuperBlockPage> m_pSuper;
bool m_bWriteable;
rtl::Reference< PageData::Allocator > m_xAllocator;
rtl::Reference< PageCache > m_xCache;
/** Page Access (control).
*/
public:
struct Ace
{
Ace * m_next;
Ace * m_prev;
sal_uInt32 m_addr;
sal_uInt32 m_used;
Ace();
~Ace();
static int SAL_CALL constructor (void * obj, void * arg);
static Ace * find (Ace * head, sal_uInt32 addr);
static void insert (Ace * head, Ace * entry);
};
private:
Ace m_ace_head;
class AceCache;
/** Initialization.
*/
storeError initialize_Impl (
ILockBytes * pLockBytes,
storeAccessMode eAccessMode,
sal_uInt16 & rnPageSize);
void cleanup_Impl();
/** Page Maintenance.
*/
storeError loadObjectAt_Impl (
OStorePageObject & rPage, sal_uInt32 nAddr) const;
storeError saveObjectAt_Impl (
OStorePageObject & rPage, sal_uInt32 nAddr) const;
OStorePageBIOS (const OStorePageBIOS&) = delete;
OStorePageBIOS& operator= (const OStorePageBIOS&) = delete;
};
inline OStorePageBIOS::operator osl::Mutex& (void) const
{
return const_cast<osl::Mutex&>(m_aMutex);
}
inline bool OStorePageBIOS::isWriteable() const
{
return m_bWriteable;
}
inline bool OStorePageBIOS::isValid() const
{
return m_xLockBytes.is();
}
} // namespace store
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
